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Two coins are tossed . The probability o...

Two coins are tossed . The probability of getting 2 tails if it is known that there is atleast one tail on the coins is

A

`(1)/(3)`

B

`(2)/(3)`

C

`(1)/(4)`

D

`(1)/(5)`

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The correct Answer is:
A
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AAKASH SERIES-PROBABILITY-Exercise-I
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  11. A coin and six faced die, both unbaised are thrown simultaneously . Th...

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  18. At a selection, the probability of selection of A is 1/7 and that of B...

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